Project property tools allows reading and writing of .Net Standard projects.
It consists of two build steps:
This task reads your .Net Standard csproj file, and converts the specified project property to an environment variable.
This task includes the option to define a prefix for the variable.
This task writes a value back to your .Net Standard csproj file - in the specified project property.
This is the source of .Net Standard Project Property Reader and Writer from the Azure DevOps Marketplace.